diff --git a/.github/workflows/tests-e2e.yml b/.github/workflows/tests-e2e.yml
index c0145b4..a2d1be2 100644
--- a/.github/workflows/tests-e2e.yml
+++ b/.github/workflows/tests-e2e.yml
@@ -96,7 +96,8 @@ jobs:
       matrix:
         include:
           - php: '8.1'
-            core: 'WordPress/WordPress#6.2'
+            core: 'WordPress/WordPress#6.4'
+          # null = latest official WordPress release (wp-env default).
           - php: '8.3'
             core: null
     steps:
diff --git a/.github/workflows/tests-php.yml b/.github/workflows/tests-php.yml
index da978f3..a483f5b 100644
--- a/.github/workflows/tests-php.yml
+++ b/.github/workflows/tests-php.yml
@@ -57,10 +57,11 @@ jobs:
       fail-fast: false
       matrix:
         php: ['8.1', '8.3']
+        # null = latest official WordPress release (wp-env default).
         core: [null]
         include:
           - php: '8.1'
-            core: 'WordPress/WordPress#6.2'
+            core: 'WordPress/WordPress#6.4'
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/README.md b/README.md
index 1027c84..7601356 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ An accessible tabs block for WordPress Gutenberg editor that follows ARIA best p
 
 ## Requirements
 
-- WordPress 6.2 or higher
+- WordPress 6.4 or higher
 - PHP 8.1 or higher
 - Gutenberg editor enabled
 
@@ -54,17 +54,23 @@ By default, the block comes with 3 tabs. Each tab contains a panel where you can
 
 1. Select a tab item
 2. In the block toolbar, click the "Icon" button
-3. Choose an icon from the available options (native WordPress `core/icon` block)
+3. Choose an icon from a registered icon block
 
-To keep supporting Blockparty Icons / BeAPI Icon Block instead of (or in addition to) `core/icon`, use the `blockparty_tabs_allowed_icon_blocks` filter:
+By default the plugin allows, in order:
+
+1. `core/icon` (WordPress 7.0+)
+2. `blockparty/icon`
+3. `beapi/icon-block`
+
+Only registered blocks are kept, so on WordPress 6.4–6.9 icons work when Blockparty Icons or BeAPI Icon Block is active. On WordPress 7.0+, `core/icon` is preferred when present.
+
+Customize the list with the `blockparty_tabs_allowed_icon_blocks` filter:
 
 ```php
 add_filter(
 	'blockparty_tabs_allowed_icon_blocks',
-	static function ( array $blocks ): array {
-		$blocks[] = 'blockparty/icon';
-		$blocks[] = 'beapi/icon-block';
-		return $blocks;
+	static function (): array {
+		return [ 'core/icon' ];
 	}
 );
 ```
diff --git a/blockparty-tabs.php b/blockparty-tabs.php
index 7174a7b..0e88431 100644
--- a/blockparty-tabs.php
+++ b/blockparty-tabs.php
@@ -2,7 +2,7 @@
 /**
  * Plugin Name:       Blockparty Tabs
  * Description:       Accessible Tabs block for WordPress gutenberg.
- * Requires at least: 6.2
+ * Requires at least: 6.4
  * Requires PHP:      8.1
  * Version:           1.1.5
  * Author:            Be API Technical team
@@ -32,9 +32,17 @@ function init(): void {
 add_action( 'init', __NAMESPACE__ . '\\init' );
 
 /**
- * Default icon block used inside tab nav items.
+ * Default icon blocks allowed inside tab nav items.
+ *
+ * `core/icon` ships in WordPress 7.0+. Legacy Blockparty / BeAPI icon blocks
+ * remain in the default list so icons keep working on the required 6.4+ range
+ * whenever those plugins are active. The editor keeps only registered names.
  */
-const BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK = 'core/icon';
+const BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS = [
+	'core/icon',
+	'blockparty/icon',
+	'beapi/icon-block',
+];
 
 /**
  * Returns the icon block names allowed inside tab nav items.
@@ -45,15 +53,14 @@ function get_allowed_icon_blocks(): array {
 	/**
 	 * Filters the icon block types allowed inside tab nav items.
 	 *
-	 * By default only `core/icon` is allowed. To keep supporting
-	 * Blockparty Icons / BeAPI Icon Block as before:
+	 * Defaults prefer `core/icon` (WordPress 7.0+) and include
+	 * `blockparty/icon` / `beapi/icon-block` for older installs. Example —
+	 * allow only the native icon block:
 	 *
 	 *     add_filter(
 	 *         'blockparty_tabs_allowed_icon_blocks',
-	 *         static function ( array $blocks ): array {
-	 *             $blocks[] = 'blockparty/icon';
-	 *             $blocks[] = 'beapi/icon-block';
-	 *             return $blocks;
+	 *         static function (): array {
+	 *             return [ 'core/icon' ];
 	 *         }
 	 *     );
 	 *
@@ -64,11 +71,11 @@ function get_allowed_icon_blocks(): array {
 	 */
 	$blocks = apply_filters(
 		'blockparty_tabs_allowed_icon_blocks',
-		[ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ]
+		BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS
 	);
 
 	if ( ! is_array( $blocks ) ) {
-		return [ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ];
+		return BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS;
 	}
 
 	$sanitized = [];
@@ -87,7 +94,7 @@ function get_allowed_icon_blocks(): array {
 
 	$sanitized = array_values( array_unique( $sanitized ) );
 
-	return [] === $sanitized ? [ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ] : $sanitized;
+	return [] === $sanitized ? BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS : $sanitized;
 }
 
 /**
diff --git a/composer.json b/composer.json
index 3b15749..da67fe1 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,7 @@
     "phpunit/phpunit": "9.6.37",
     "roave/security-advisories": "dev-latest",
     "wp-coding-standards/wpcs": "^3.0",
-    "wp-phpunit/wp-phpunit": "6.8.9",
+    "wp-phpunit/wp-phpunit": "7.1.1",
     "yoast/phpunit-polyfills": "4.0.0"
   },
   "scripts": {
diff --git a/readme.txt b/readme.txt
index 7a887fe..df1f8bf 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,8 +1,10 @@
 === Blockparty Tabs ===
 Contributors:      Be API Technical team
-Tags:              block
-Tested up to:      6.0
-Stable tag:        1.1.5
+Tags:              block, tabs, accessibility
+Requires at least: 6.4
+Requires PHP:      8.1
+Tested up to:      7.1
+Stable tag:        2.0.0
 License:           GPL-2.0-or-later
 License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 
diff --git a/src/blockparty-tabs-nav-item/getAllowedIconBlocks.js b/src/blockparty-tabs-nav-item/getAllowedIconBlocks.js
index f5226e6..a25e2b8 100644
--- a/src/blockparty-tabs-nav-item/getAllowedIconBlocks.js
+++ b/src/blockparty-tabs-nav-item/getAllowedIconBlocks.js
@@ -1,6 +1,17 @@
 import { getBlockType } from '@wordpress/blocks';
 
-const BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK = 'core/icon';
+/**
+ * Default icon blocks allowed inside tab nav items.
+ *
+ * `core/icon` ships in WordPress 7.0+. Legacy Blockparty / BeAPI icon blocks
+ * remain so icons keep working on WordPress 6.4–6.9 when those plugins are
+ * active. Only registered names are kept by getRegisteredIconBlocks().
+ */
+export const BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS = [
+	'core/icon',
+	'blockparty/icon',
+	'beapi/icon-block',
+];
 
 /**
  * Legacy Blockparty / BeAPI icon blocks expect width + maxIcons.
@@ -33,7 +44,7 @@ export const getRegisteredIconBlocks = () => {
 	const candidates =
 		Array.isArray( fromPhp ) && fromPhp.length > 0
 			? fromPhp
-			: [ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ];
+			: BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS;
 
 	return candidates.filter(
 		( blockName ) => typeof getBlockType( blockName ) !== 'undefined'
diff --git a/tests/js/getAllowedIconBlocks.test.js b/tests/js/getAllowedIconBlocks.test.js
index f33237f..40083f3 100644
--- a/tests/js/getAllowedIconBlocks.test.js
+++ b/tests/js/getAllowedIconBlocks.test.js
@@ -6,6 +6,7 @@
  * Internal dependencies
  */
 import {
+	BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS,
 	getIconTemplateAttributes,
 	getRegisteredIconBlocks,
 } from '../../src/blockparty-tabs-nav-item/getAllowedIconBlocks';
@@ -41,12 +42,30 @@ describe( 'getRegisteredIconBlocks', () => {
 		delete window.blockpartyTabsSettings;
 	} );
 
-	it( 'defaults to core/icon when settings are missing', () => {
+	it( 'defaults to registered candidates from the shared default list', () => {
 		getBlockType.mockImplementation( ( name ) =>
-			name === 'core/icon' ? { name } : undefined
+			name === 'blockparty/icon' ? { name } : undefined
 		);
 
-		expect( getRegisteredIconBlocks() ).toEqual( [ 'core/icon' ] );
+		expect( BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS ).toEqual( [
+			'core/icon',
+			'blockparty/icon',
+			'beapi/icon-block',
+		] );
+		expect( getRegisteredIconBlocks() ).toEqual( [ 'blockparty/icon' ] );
+	} );
+
+	it( 'prefers core/icon when it is registered among defaults', () => {
+		getBlockType.mockImplementation( ( name ) =>
+			[ 'core/icon', 'blockparty/icon' ].includes( name )
+				? { name }
+				: undefined
+		);
+
+		expect( getRegisteredIconBlocks() ).toEqual( [
+			'core/icon',
+			'blockparty/icon',
+		] );
 	} );
 
 	it( 'keeps only registered blocks from PHP settings', () => {
@@ -77,4 +96,10 @@ describe( 'getRegisteredIconBlocks', () => {
 
 		expect( getRegisteredIconBlocks() ).toEqual( [] );
 	} );
+
+	it( 'returns an empty list on WordPress without core/icon or legacy plugins', () => {
+		getBlockType.mockReturnValue( undefined );
+
+		expect( getRegisteredIconBlocks() ).toEqual( [] );
+	} );
 } );
diff --git a/tests/php/AllowedIconBlocksTest.php b/tests/php/AllowedIconBlocksTest.php
index 56d2b0d..16a6814 100644
--- a/tests/php/AllowedIconBlocksTest.php
+++ b/tests/php/AllowedIconBlocksTest.php
@@ -9,7 +9,7 @@
 
 use WP_UnitTestCase;
 use function Blockparty\Tabs\get_allowed_icon_blocks;
-use const Blockparty\Tabs\BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK;
+use const Blockparty\Tabs\BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS;
 
 /**
  * @covers ::Blockparty\Tabs\get_allowed_icon_blocks
@@ -27,9 +27,34 @@ public function tearDown(): void {
 	/**
 	 * @return void
 	 */
-	public function test_defaults_to_core_icon(): void {
+	public function test_defaults_include_core_and_legacy_icon_blocks(): void {
 		$this->assertSame(
-			[ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ],
+			BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS,
+			get_allowed_icon_blocks()
+		);
+		$this->assertSame(
+			[
+				'core/icon',
+				'blockparty/icon',
+				'beapi/icon-block',
+			],
+			get_allowed_icon_blocks()
+		);
+	}
+
+	/**
+	 * @return void
+	 */
+	public function test_filter_can_replace_icon_blocks(): void {
+		add_filter(
+			'blockparty_tabs_allowed_icon_blocks',
+			static function (): array {
+				return [ 'core/icon' ];
+			}
+		);
+
+		$this->assertSame(
+			[ 'core/icon' ],
 			get_allowed_icon_blocks()
 		);
 	}
@@ -41,8 +66,7 @@ public function test_filter_can_append_icon_blocks(): void {
 		add_filter(
 			'blockparty_tabs_allowed_icon_blocks',
 			static function ( array $blocks ): array {
-				$blocks[] = 'blockparty/icon';
-				$blocks[] = 'beapi/icon-block';
+				$blocks[] = 'my-plugin/custom-icon';
 				return $blocks;
 			}
 		);
@@ -52,6 +76,7 @@ static function ( array $blocks ): array {
 				'core/icon',
 				'blockparty/icon',
 				'beapi/icon-block',
+				'my-plugin/custom-icon',
 			],
 			get_allowed_icon_blocks()
 		);
@@ -97,7 +122,7 @@ static function () {
 		);
 
 		$this->assertSame(
-			[ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ],
+			BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS,
 			get_allowed_icon_blocks()
 		);
 	}
@@ -114,7 +139,7 @@ static function (): array {
 		);
 
 		$this->assertSame(
-			[ BLOCKPARTY_TABS_DEFAULT_ICON_BLOCK ],
+			BLOCKPARTY_TABS_DEFAULT_ICON_BLOCKS,
 			get_allowed_icon_blocks()
 		);
 	}
diff --git a/tests/playwright/specs/editor-tabs.spec.js b/tests/playwright/specs/editor-tabs.spec.js
index 17bb105..5643807 100644
--- a/tests/playwright/specs/editor-tabs.spec.js
+++ b/tests/playwright/specs/editor-tabs.spec.js
@@ -6,9 +6,8 @@ import { test, expect } from '../utils/fixtures';
 /**
  * Resolve the block editor content root.
  *
- * WordPress 6.3+ uses an iframed canvas (`editor-canvas`). Older versions render
- * blocks in the parent document. `FrameLocator.or()` is unreliable when the
- * iframe is absent, so detect the canvas mode explicitly.
+ * WordPress 6.4+ uses an iframed canvas (`editor-canvas`). Detect the canvas
+ * mode explicitly: `FrameLocator.or()` is unreliable when the iframe is absent.
  *
  * @param {import('@playwright/test').Page} page
  */
diff --git a/webpack.config.js b/webpack.config.js
index 3a804b5..8b808b2 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -10,7 +10,7 @@ const defaultConfig = require( '@wordpress/scripts/config/webpack.config' );
 /**
  * Polyfill for the `react-jsx-runtime` script handle added in WordPress 6.6.
  * Modern @wordpress/scripts builds declare this dependency; without it, editor
- * scripts never load on WordPress 6.2–6.5 and blocks stay unregistered.
+ * scripts never load on WordPress 6.4–6.5 and blocks stay unregistered.
  *
  * Compiled after the main blocks config (`dependencies`) so `output.clean` from
  * `@wordpress/scripts` cannot delete the polyfill asset in a parallel race.